First in Human Dose Escalation Study of YL-13027 in Subjects With Advanced Stage Solid Tumors

Inclusion Criteria:

1. Males and/or females age from 18 to 75;
2. Histologically or cytologically confirmed patients with advanced malignant solid tumors, eligible patients must have failed standard treatment, no standard treatment, or not suitable for standard treatment at this stage as determined by the investigator;
3. In the dose escalation portion, both measurable and non-measurable tumor lesions were acceptable according to RECIST1.1 criteria;There was at least one measurable tumor lesion in the dose expansion portion;
4. Eastern Cooperative Oncology Group performance status of 0 to 1;
5. Life expectancy of at least 3 months;
6. Acceptable organ function: Absolute neutrophil count(ANC)≥1.5×109/L; Platelet count(PLT)≥100×109/L; Hemoglobin(Hb)≥90 g/L; Total bilirubin(TBIL)≤1.5×Upper limit of normal value(ULN); Alanine aminotransferase(ALT)≤2.5×ULN; Aspartate aminotransferase(AST)≤2.5×ULN; Creatinine(Cr)≤1.5×ULN; Creatinine clearance ≥50ml/min;Left Ventricular Ejection Fractions(LVEF)≥50%； QTcF\<450 ms;
7. The washout period from the last time accepting any anti-tumor treatment (including radiation therapy, chemotherapy, hormone therapy, surgery, or molecular targeted therapy) to participating in this test should be 3 weeks or more.The washout period of oral fluorouracil should be 2 weeks or more, and that of mitomycin and nitrosocarbamide should be 6 weeks or more;
8. Fertile male and female must agree to use medically approved contraceptives during the study and within 6 months after the last dose of the study;
9. Female who is capable of conceiving:Blood pregnancy tests should be negative 7 days before the first dose; Patients cannot breastfeed, if the subject has stopped breastfeeding at the time of study entry, the cessation of breastfeeding must be from the day of first dose to more than 30 days after the last dose;
10. The last time participate in an investigational drug study should be more than one month prior to the study entry;
11. According to the judgment of the investigator, the subject has high compliance and is willing to complete the experiment and comply with the protocol;
12. Voluntary participation in this clinical trial, understanding of the study procedures and the ability to sign informed consent forms (ICFs).

Exclusion Criteria:

1. There are third interstitial effusions (such as massive pleural effusion and ascites) which can not be controlled by drainage or other methods;
2. Within 3 months before the first dose, grade 3 or grade 4 gastrointestinal bleeding or varicose bleeding and requiring blood transfusion or endoscopic or surgical intervention has happened;
3. Medical history of difficulty in swallowing, malabsorption, or other chronic gastrointestinal disease, or conditions that may hamper compliance and/or absorption of the tested product;
4. subjects with a definitely history of neurological or psychiatric disorders;
5. Known infection with human immunodeficiency virus (HIV), hepatitis B virus(HBV), or hepatitis C virus (HCV);
6. History of immunodeficiency, including HIV positive test, other acquired or congenital immunodeficiency disorders, organ transplantation or allogeneic bone marrow transplantation;
7. Exists moderate or severe heart disease: (1) Within 6 months before the first dose,myocardial infarction, angina, grade III/IV congestive heart failure, pericardial effusion, uncontrollable severe hypertension (up to 150/90 mmHg or less) (2) ECG abnormalities with clinical significance: symptomatic or persistent atrial or ventricular arrhythmias, degree II or III atrioventricular block, bundle branch block, ventricular hypertrophy; (3) The echocardiogram shows significant abnormalities: For example, moderate or severe heart valve function defects are assessed according to the normal lower limit of the institution;Patients with minor or mild valve regurgitation (tricuspid, pulmonary, mitral, or aortic) can be included in this study (4) Laboratory examination shows brain natriuretic peptide or troponin T levels increases (5) Various factors that may increase the risk of QTcF prolonging or arrhythmia events. For example, hypokalemia, congenital long QT syndrome, may prolong the QT interval of various combined drugs, etc. (6) Predisposition factors cause the development of ascending aorta or aortic arch aneurysm: For example, marfan syndrome, CT records of the history of cardiac vascular injury; (7) History of heart or aortic surgery.
8. Patients with central nervous system metastasis;
9. At the beginning of the study, the unrecovered toxicity of the previous treatment exceeded CTCAE5.0 grade 1(except for hair loss);
10. Previously treated with TGF-β inhibitors;
11. According to the judgement of the researcher,there are concomitant diseases that seriously endanger the safety of patients or affect the completion of the study (such as severe hypertension, diabetes, thyroid diseases, etc.).
12. subjects, in the opinion of the the Investigator, who are unsuitable to participate in the study for any other reason.